https://commits.webkit.org/269168@main introduced a regression: Introduced crashes in debug This is an automatic bug report generated by webkitbot. If this bug report was created because of a flaky test, please file a bug for the flaky test (if we don't already have one on file) and dup this bug against that bug so that we can track how often these flaky tests fail.
Created attachment 468174 [details] REVERT of 269168@main Any committer can land this patch automatically by marking it commit-queue+. The commit-queue will build and test the patch before landing to ensure that the revert will be successful. This process takes approximately 15 minutes. If you would like to land the revert faster, you can use the following command: webkit-patch land-attachment ATTACHMENT_ID where ATTACHMENT_ID is the ID of this attachment.
CRASHING TEST: fast/css/stylesheet-layout-with-pending-paint-expected.html Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 JavaScriptCore 0x138a02244 WTFCrash + 24 (Assertions.cpp:333) 1 WebCore 0x282d078ac WTFCrashWithInfo(int, char const*, char const*, int) + 36 (Assertions.h:778) 2 WebCore 0x284134440 WebCore::HTMLLinkElement::clearSheet() + 240 (HTMLLinkElement.cpp:374) 3 WebCore 0x2841346c0 WebCore::HTMLLinkElement::removedFromAncestor(WebCore::Node::RemovalType, WebCore::ContainerNode&) + 152 (HTMLLinkElement.cpp:408) 4 WebCore 0x283aed8d4 WebCore::notifyNodeRemovedFromDocument(WebCore::ContainerNode&, WebCore::TreeScopeChange, WebCore::Node&) + 324 (ContainerNodeAlgorithms.cpp:126) 5 WebCore 0x283aed9c8 WebCore::notifyNodeRemovedFromDocument(WebCore::ContainerNode&, WebCore::TreeScopeChange, WebCore::Node&) + 568 (ContainerNodeAlgorithms.cpp:134) 6 WebCore 0x283aed9c8 WebCore::notifyNodeRemovedFromDocument(WebCore::ContainerNode&, WebCore::TreeScopeChange, WebCore::Node&) + 568 (ContainerNodeAlgorithms.cpp:134) 7 WebCore 0x283aed6f4 WebCore::notifyChildNodeRemoved(WebCore::ContainerNode&, WebCore::Node&) + 204 (ContainerNodeAlgorithms.cpp:178) 8 WebCore 0x283ae6820 WebCore::removeDetachedChildrenInContainer(WebCore::ContainerNode&) + 408 (ContainerNodeAlgorithms.cpp:197) 9 WebCore 0x283ae663c WebCore::ContainerNode::removeDetachedChildren() + 140 (ContainerNode.cpp:346) 10 WebCore 0x283b5558c WebCore::Document::removedLastRef() + 580 (Document.cpp:828) 11 WebCore 0x283d381a8 WebCore::Node::removedLastRef() + 160 (Node.cpp:2640) 12 WebCore 0x280182430 WebCore::Node::deref() const + 568 (Node.h:822) 13 WebCore 0x2806d0b68 WebCore::EventTarget::deref() + 52 (Node.h:908) 14 WebCore 0x280c0e004 WTF::DefaultRefDerefTraits<WebCore::EventTarget>::derefIfNotNull(WebCore::EventTarget*) + 48 (RefPtr.h:43) 15 WebCore 0x280c0dfc4 WTF::RefPtr<WebCore::EventTarget, WTF::RawPtrTraits<WebCore::EventTarget>, WTF::DefaultRefDerefTraits<WebCore::EventTarget>>::~RefPtr() + 44 (RefPtr.h:75) 16 WebCore 0x280c0df58 WTF::RefPtr<WebCore::EventTarget, WTF::RawPtrTraits<WebCore::EventTarget>, WTF::DefaultRefDerefTraits<WebCore::EventTarget>>::~RefPtr() + 32 (RefPtr.h:75) 17 WebCore 0x283c97268 WebCore::Event::~Event() + 80 (Event.cpp:90) 18 WebCore 0x283c97eb4 WebCore::Event::~Event() + 32 (Event.cpp:90) 19 WebCore 0x283c97ee4 WebCore::Event::~Event() + 32 (Event.cpp:90) 20 WebCore 0x282d551dc std::__1::default_delete<WebCore::Event>::operator()[abi:v160006](WebCore::Event*) const + 92 (unique_ptr.h:65) 21 WebCore 0x2803a9c40 WTF::RefCounted<WebCore::Event, std::__1::default_delete<WebCore::Event>>::deref() const + 56 (RefCounted.h:190) 22 WebCore 0x282d55168 WTF::Ref<WebCore::Event, WTF::RawPtrTraits<WebCore::Event>>::~Ref() + 80 (Ref.h:61) 23 WebCore 0x28044b980 WTF::Ref<WebCore::Event, WTF::RawPtrTraits<WebCore::Event>>::~Ref() + 32 (Ref.h:55) 24 WebCore 0x280d1d654 WebCore::JSDOMWrapper<WebCore::Event, WTF::RawPtrTraits<WebCore::Event>>::~JSDOMWrapper() + 36 (JSDOMWrapper.h:74) 25 WebCore 0x280d1d620 WebCore::JSEvent::~JSEvent() + 32 (JSEvent.h:30) 26 WebCore 0x280cb09a4 WebCore::JSEvent::~JSEvent() + 32 (JSEvent.h:30)
It is flaky but one should be able to reproduce pretty easily by running the fast/css tests in debug.
Committed 269203@main (8f02a8f5aca1): <https://commits.webkit.org/269203@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 468174 [details].
<rdar://problem/116815789>